Need help with following questions. Solutions with details would be great, thank you!

1. A Sales Tax bond issued by the Los Angeles Metropolitan Transportation Authority, has an Additional Bonds Test of 1.5x MADS. In fiscal 2017, the pledged tax produced $745 million. Under LAMTA's current Indenture, principal and interest in 2035 is the highest year at $405 million. Can LAMTA issue new bonds against this revenue stream that would cost $55 million (P&I) every year through 2040?

2. An investor living in Miami is in the top federal tax bracket, and her broker shows her two 5-year bonds. She can buy an AA rated Microsoft bond that yields 2.5% or a AA rated City of Houston water revenue bond for 1.55%. Which one should she buy? 3. A new tolled bridge is being constructed across the Rio Grande that will require $200million of bonds. Debt service is level for 30 years after the bridge is slated to open on 1/1/2020 at $16 million per year (principal and interest). The engineering consultant anticipates 4 million cars will drive across the bridge each way in the first year, but tolls will only be collected on the northbound lane. If there is a Rate Covenant of 1.25x in the Indenture, what is the minimum toll rate per car for 2020 according to the consultant?

4. What is the taxable equivalent yield on a Aa2 rated NYU bond issued through the Dormitory Authority at a purchase yield of 2.8% for somebody in the top marginal rate who lives in the penthouse unit of 725 5 th Avenue? 5. Bank of America will provide Bannon Prep with an irrevocable Letter of Credit for 75bps per year fee on a $20 million bond due in 10 years. With this AA rated LOC, Bannon can issue a VRDO that will yield SIFMA over the life of the bond. Bank of America will provide the school with an interest rate swap where it receives 2.5% and pays Bannon a floating rate equal to the SIFMA index. What is the total cost of capital for Bannon over the life of the bond?

5. Bank of America will provide Bannon Prep with an irrevocable Letter of Credit for 75bps per year fee on a $20 million bond due in 10 years. With this AA rated LOC, Bannon can issue a VRDO that will yield SIFMA over the life of the bond. Bank of America will provide the school with an interest rate swap where it receives 2.5% and pays Bannon a floating rate equal to the SIFMA index. What is the total cost of capital for Bannon over the life of the bond?